#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>

int main()
{
    printf("程序运行起始位置\n");
    char* argv[] = {"ls","-l",NULL};

    execl("/bin/ls","-l",NULL);        

    printf("程序运行结束位置\n");
    return 0;
}
